Secure Crypt’s Permanent Tools give you full, persistent control over your encrypted files. When you lock a file, the original is deleted and replaced with an AES-256-GCM encrypted archive — the only way back is the correct password. This guide walks through locking and unlocking individual files and entire folder trees, and explains the Force Lock option that prevents permanent decryption.Documentation Index
Fetch the complete documentation index at: https://mintlify.com/Anzi001/Secure-Crypt/llms.txt
Use this file to discover all available pages before exploring further.
Locking a single file
Locking a file encrypts it in-place. The original file is deleted and replaced by a.scrypt file carrying the same name with .scrypt appended. For example, report.pdf becomes report.pdf.scrypt.
Click 'LOCK FILE'
In the Permanent Tools section of the Secure Crypt window, click the 🔒 LOCK FILE button.
Select a file
A file picker opens. Browse to and select any file you want to encrypt. There are no restrictions on file type.
Enter a password
A dialog prompts “Enter password:”. Type the password you want to use to protect this file.
Confirm the password
A second dialog prompts “Confirm password:”. Re-enter the same password. If the two entries do not match, the operation is cancelled automatically.
Wait for encryption
A Processing… window appears with an indeterminate progress bar while the file is encrypted. Do not close the app during this step.
Unlocking a single file
Unlocking permanently decrypts the.scrypt file and restores the original file in the same location.
Select the .scrypt file
The file picker opens filtered to
*.scrypt files. Select the encrypted file you want to unlock.All encryption and decryption tasks run in a background thread. The Secure Crypt window stays fully responsive while large files are processed.
Locking a folder
When you lock a folder, Secure Crypt first compresses the entire directory tree into a ZIP archive, then encrypts those ZIP bytes using AES-256-GCM. The resulting.scryptfold file is a single encrypted blob that preserves the original folder structure internally.
Select a folder
A directory picker opens. Select the root folder you want to encrypt. All subfolders and files within it are included.
Enter and confirm a password
Enter a password and confirm it in the second dialog. If the two entries do not match, the operation is cancelled.
Wait for encryption
Secure Crypt zips the folder tree, encrypts the resulting archive, and writes the
.scryptfold file. A progress bar is shown during this step.Unlocking a folder
Select the .scryptfold file
The file picker opens filtered to
*.scryptfold files. Select the encrypted folder archive you want to restore.Unlocking runs in a background thread. Restoring large folder trees may take a moment depending on disk speed, but the UI remains responsive throughout.
Force Lock (Mandatory Lock)
The Force Password Every Time checkbox, located near the top of the Secure Crypt window, enables Mandatory Lock mode. When this checkbox is ticked before locking a file or folder, Secure Crypt writes anM flag byte at position 0 of the encrypted file, marking it as a mandatory-lock archive.
What this means in practice:
- The recipient (or you) can only open the file using Quick View — the temporary, auto-relock workflow.
- Attempting to use UNLOCK FILE or UNLOCK FOLDER on a mandatory-lock file will immediately show an error dialog titled “Access Denied” with the message “Mandatory lock. Use Quick View.” and refuse to proceed.
- The
Mflag is preserved every time the file is re-encrypted after a Quick View session, so the restriction persists permanently.